ATE Pro. USA WM 151-C User manual

OPERATING INSTRUCTIONS
The manual is the same with skill operator; we request to read the instruction.
People who without training cannot install operating or maintenance the equipment, i
f
you read and understand the detail rule in this book. You can install or operate, if you
cannot understand, please contact the supplier to get further information.
Caution
WM 151-C
WELDING MACHINE

2
Responsibility
The user shall inspect the equipment, and faulty equipment shall be stopped. All the faulted,
missed, abrasive, distorted and polluted parts shall be changed promptly. When repair or change,
the manufacturer advised the user to changed the part forward the require in written or calling form
to the licensed distributors.
The user can not change any parts without the manufactures advanced permission,
Otherwise, the user shall be responsible for an the accidents caused by the inappropriate use.
Catalogue
Chapter/Paragraph Content Page
Safety Safety caution…………………………………………… 3
Chapter 1 Product description……………………………………… 6
Chapter 2 Assembly………………………………………………… 8
Chapter 3 Operation………………………………………………… 12
Chapter 4 Maintenance…………………………………………… 16
Chapter 5 Fault diagnosis………………………………………… 17

3
Safety Warning
GENERAL SAFETY
Danger means a hazard that will cause death or serious injury if
the warning is ignored.
Warning means a hazard that could cause death or serious injury
if the warning is ignored.
Caution means a hazard that may cause minor or moderate injury
if the warning is ignored. It also may mean a hazard that will only
cause damage to property.
Improper use of electric arc welders can
cause electric shock, injury, and death! Take all precautions
described in this manual to reduce the possibility of electric shock.
● Verify that all components of the arc welder are clean and in good condition prior to operating
the welder. Be sure that the insulation on all cables, electrode holders, and power cords is not
damaged. Always repair or replace damaged components before operating the welder. Always
keep welder panels, shields, etc. in place when operating the welder.
● Always wear dry protective clothing and welding gloves, and insulated footwear.
● Always operate the welder in a clean, dry, well ventilated area. Do not operate the welder in
humid, wet, rainy, or poorly ventilated areas.
● Be sure that the work piece is properly supported and grounded prior to beginning any electric
arc welding operation.
● Coiled welding cable should be spread out before use to avoid overheating and damage to
insulation.
Electric arc welding operations produce
intense light and heat and ultraviolet (UV) rays. This intense light
and UV rays can cause injury to eyes and skin. Take all precautions
described in this manual to reduce the possibility of injury to eyes and skin.
● All persons operating this equipment or in the area while equipment is in use must wear
protective welding gear including: welding helmet or shield with proper shade as specified in the
following chart, flame resistant clothing, leather welding gloves, and full foot protection.
● Never look at arc welding operations without eye protection as described above. Never use a
shade filter lens that is cracked, broken, or rated below number 10. Warn others in the area
not to look at the arc.
WARNING
WARNING
Warning
Caution
Danger

4
Safety Warning
Electric arc welding operations cause sparks
and heat metal to temperatures that can cause severe burns! Use
protective gloves and clothing when performing any metal working
operation. Take all precautions described in this manual to reduce the
possibility of skin and clothing burns.
●Make sure that all persons in the welding area are protected from heat, sparks, and ultraviolet
rays. Use additional face shields and flame resistant barriers as needed.
●Never touch work pieces until completely cooled.
Heat and sparks produced during electric arc
welding and other metal working operations can ignite flammable
and explosive materials! Take all precautions described in this
manual to reduce the possibility of flames and explosions.
●Remove all flammable materials within 35 feet (10.7 meters) of welding arc. If removal is not
possible, tightly cover flammable materials with fire proof covers.
● Do not operate any electric arc welder in areas where flammable or explosive vapors may be
present. Take precautions to be sure that flying sparks and heat do not cause flames in hidden
areas, cracks, behind bulkheads, etc.
Do not breathe fumes that are produced by
the arc welding operation. These fumes are dangerous. If the welding
area cannot be adequately ventilated, be sure to use an air-supplied
respirator.
●Keep the head and face out of the welding fumes.
● Do not perform electric arc welding operations on metals that are galvanized or cadmium
plated, or contain zinc, mercury, or beryllium without completing the following precautions:
a. Remove the coating from the base metal.
b. Make sure that the welding area is well ventilated.
c. Use an air-supplied respirator.
Extremely toxic fumes are created when these metals are heated.
The electromagnetic field that is generated
during arc welding may interfere with the operation of various
electrical and electronic devices such as cardiac pacemakers.
Persons using such devices should consult with their physician prior to
performing any electric arc welding operations.
WARNING
WARNING
WARNING
WARNING

5
Safety Warning
●Never wrap arc welder cables around the body.
●Always position the electrode and ground leads so that they are on the same side of the body.
●Exposure to electromagnetic fields during welding may have other health effects which are not
known.
Equipment maintenance----The wrong or
inappropriate equipment maintenance can cause injury or death.
●The licensed people can do assembly, maintenance and some other operation.
●The power source shall be turned off when any maintenance work in the power source needed.
●Endure that the cable, earth wire, connector, main lead and power supply are in the normal
work.
●Do not abuse equipments and firing.
●Keep the safe equipment and cabinet dos shall in peace and good condition.
●Do not change any equipment.
WARNING

6
Chapter 1 Product description
1.1 Produce application
MIG series welding machine adopt special tapped transformer adjusting style. It is the
economical and practical mechanical products, it has wire-feed system, small volume, easy to
shift and simple operation, it applies to welding low-carbon steel, low-alloy steel and so on.
1.2 Model unit Model
Item WM 151-C
Rated input voltage 230
Frequency 60
Phase single
Max. input current 20A
Max. output voltage 36VDC
Rated output current 30A 50A 75A 105A
Rated output voltage 15.5V 16.5V 17.7V 19.2V
Duty cycle 100% 60% 30% 15%
Insulation grade H
Weight 26.2Kg
Dimension(L×W×H) 72cm×32cm×54cm
1.3 Voltage characteristic and current characteristic of welding power
The curve (as diagram1-1) means “V-A” external static characteristic of welding power,
gradient of cure named slope, normal means “drop off voltage per 100A”. The curve shows the
output voltage we can get in any preset output current because the “V-A” slope id fixed.
WIM 151-C external static characteristic
0
10
20
30
40
0 50 100 150 200 250 I2(A)
U2(V)
Diagram 1-1 External static characteristic

7
Chapter 1 Product description
1.4 Equipment condition
a) Range of the temperature of the ambient air :
During welding: －10℃to ＋40℃
After transport and storage at : －25℃to ＋55℃
b) Relative humidity of the air :
Up to 50% at 40℃
Up to 90% at 20℃
c) Ambient air, free from abnormal amounts of dust, acids, corrosive gases or substances etc.
other than those generated by the welding process.
d) Altitude above sea level up to 1000m.
e) Base of the welding power source include up to 15°.
1.5 Noise announce
When the machine working, it maybe have noise, but the noise can’t exceed 75 decibel.
1.6 Safety
Before operating the equipment, you must read the safety directions to avoid the hurt that
because of misapply and impropriety in stalling.
1.7 Accessories
1.7.1 Hammer brush
In order to operate the machine confidently, our company will give you one hammer and one
brush as present.
1.7.2 Mask (with welding screening black glass)
When welding, the mask will protect your eyes and face.
1.7.3 Contact tip
Contact tip is the spare parts of welding torch when the contact tip damaged, you can replace
it conveniently. We give a contact tips as present.
1.7.4 Flux-cored wire
In order to operate conveniently, we provide one spool of Φ0.8 flux-core wire.
1.8 Specific packing please sees the packing list (the last page of the manual).

8
Chapter 2 Assembly
2.1 The requirement of installing ground
Equal ground is very necessary to the machine, the ground must be have good ventilation
system, and can’t be exposed in dust, dirt, wet and active steam, the minimum distance between
back board and it’s nearest bar also ≥46cm.
2.2 Check, discharged and placed
After⑴receiving the equipment, you should check if the equipment has been damaged
during traffic. If damaged, you should notify the conveyance, if lack spare parts, please notify the
dealer at once.
⑵Take the spare parts out from packing box, remove the packing material, and check if any
cast in packing box.
⑶Check every airway in the shell, and make sure packing box can’t block air circulating.
⑷Choose roomy ground to placed spare parts, in order to installing conveniently.
2.3 Installing
Connect frame of welding machine as diagram 2-1.
Diagram 2-1
2.3.1 Installing the kickstand
Block the plastic kickstand into slot that on the front of chassis of machine, and use tapping
screws to firm.
2.3.2 Installing the wheel
Installing as diagram 2-2.

9
Chapter 2 Assembly
Diagram 2-2
2.3.3 Installing the handle
Installing as diagram 2-3.
1. Fix handle socket 2. Fix straight handle 3.Fix brace
Diagram 2-3
2.3.4 Fixing the wire reel
Step 1: Open the right sideboard, and strip the wing nut from wire-feed spool axle.
Step 2: Hold the spring and wire spool into wire-feed spool axle successively, and then hold
the wing nut (as diagram 2-4).
Diagram 2-4
Right sideboard
Wire spool axle Wire spool

10
Chapter 2 Assembly
Wire feed mechanism
Diagram 2-5
Step 3: Open the wire feed impaction equipment (c), let the terminal of wire through godet
tube, wire feed wheel, and import the godet tube of welding torch, then close the equipment (c),
adjust the impaction nut of wire-feed wheel.
Step 4: Close the right sideboard
2.3.5 Installing the power plug:
Connect a 20A plug (230VAC 20A) to the line cord. This step must be done by a licensed
electrician. (Green wire = ground)
Ground: Green
Neutral: White
Hot: Black
2.3.6 Fixing the face shield (as diagram 2-6)
Diagram 2-6
Black
White
Green

11
Chapter 2 Assembly
2.3.7 Gas cylinder installation
The welder has a platform on the rear of the machine to support a gas cylinder. See diagram
2-7 for reference. If you plan on moving your welder about the shop, use only small cylinders
(outside diameter=140mm, 320mm≤height≤500mm, weight≤10Kg, service pressure≤20Mpa)
for transport safety. Large cylinders(outside diameter＞140mm , or height＞500mm, or weight＞
10Kg, service pressure≤20Mpa) should be secured in a permanent location or to a separate cart,
not to the welder. Secure the small size cylinder with the gallus supplied with the welder. Small
cylinders can be easily secured in place using the top rack “A”.
Diagram 2-7
2.3.8 Connection welder to gas cylinder
Clean the threads of the gas cylinder valve. Also open the gas valve for a few seconds to blow
out any dirt of particulates which may have gotten into the oracle in order to prevent them from
entering the regulator. Check your regulator (outlet flow meter: 0-25L/Min, inlet gauge: 0-25Mpa,
pressure range for safe outpouring: 0-0.35Mpa) to make sure that it was supplied with a gasket.
Tighten the regulator coupling to the cylinder gas valve. Now connect the welder gas line to the
hose barb outlet on your regulator; a stainless steel hose clamp can be used to insure a leak-proof
connection. (See diagram 2-8)
Check all connections for leaks by opening the regulator and cylinder gas valves.
When the machine is not in use, always shut off the regulator and cylinder gas valves.
Diagram 2-8
WELDER GAS LINE
PANEL
REGULATOR
HOSE BARB
GALLUS
GAS
C
YLINDER

12
Cautions
Chapter3 Operation
Do not operate the machine when the shell has been opened, improper
cooling can damage the parts, make sure the sideboard have been closed.
When welding, you must wear helmet、glove and other guard.
3.1 Layout drawing of control panel (diagram 3-1)
Diagram 3-1
3.1.1 "ON/OFF” switch
When the switch on “OFF” position means power has been closed, when the switch on ”ON”
position means supply power for the main transformer and control circuit.
3.1.2 “MIN/MAX” switch
“MIN/MAX” switch is at the front panel of machine, each have two shelves, opposite output
data as table 3-1.
MIG-151Comparison table of output adjusting switch position and output current
Switch Position
MIN/MAX 1/2
Working
Current
Duty
Cycle
Working
Voltage
No-load
Voltage
MIN 1 30A 100% 15.5V 21V
MIN 2 50A 60% 16.5V 24.5V
MAX 1 75A 30% 17.7V 29V
MAX 2 105A 15% 19.2V 36V
Table 3-1
“MIN/MAX” switch
“ON/OFF” switch
“1/2”switch
Overload light
Power line Grounding cable
Torch cable

13
Chapter3 Operation
3.1.3 “1/2”switch
“1/2” switch is at the front plate of the machine, on the right of “MIN/MAX” switch. Two
switches can be used at one time; you can choose different shelves of two switches according to
the metal material.
3.1.4 Overload light
If welding with large current for a long time and exceed the duty cycle, the overload lamp will
light (yellow), the machine will stop working until looking to the stated temperature. When the
overload lamp lights you must stop welding and wait about 15 minutes, you can continue.
3.2 Operation process
3.2.1 Use with cored wire
The welder can used with special Φ0.8 Flux wire that dose not require protective gas. This
wire, contrary to the case with electrodes, does not leave slag and gives better bread penetration
with substantially lower line absorption.
Make sure you use proper welding polarity: as diagram 3-2B., grounding cable connects “+”
terminal, another cable (welding torch cable) connect “-” terminal.
A B
Diagram 3-2
Step1: Use ground clamp to connect the grounding cable and work piece or connect the metal
carriages (as work table) make sure the clamp has been contacted fully with work piece and clear
the rust and paint.
Step2: Select the welding current, adjust the position of “MIN/MAX” and “1/2” switch, use higher
welding current for thicker material.
Step3: Check the position of power switch, position must be on “OFF”, then insert the inlet wire to
the socket (rated current of socket ≥20A).
Step4: Discharge the nozzle cover and contact tip at the head of welding torch, pull the soft pipe.
Step5: The welding tongs that clamp the rod can’t be contacted with any grounding objects then
turn the "ON/OFF “switch to “ON” position, the power lamp (green) will light.
Step 6: Press (and hold) the torch button until distance between wire and welding torch is 30mm
loosen torch button.
Step7: Close the power; fix the contact tip and nozzle cover onto the welding torch. (Wire must
through the contact tip and nozzle cover)

14
Chapter3 Operation
Step8: Open the power, press the switch spasmodically, adjust the speed by turning the adjusting
wire feed speed knob, in relation to the position of the welding current selector.
Step9: Orient yourself on the area to be welded, and then place the Face Shield over your eyes.
Step10: Press (and hold) the torch button and stroke the area to be welded with the electrode wire
to ignite the arc.
Step11: Once the arc is ignited, tilt the electrode wire forward at an angle of approximately 35o.
(as diagram 3-3)
Diagram 3-3
Step12: When the weld is complete, lift the electrode wire clearly away form any grounded object,
set the Face Shield down and turn the Power Switch to the “OFF” position.
Step13: Unplug the Power Cord from the electrical outlet.
3.2.2 Use mild steel wire
The welder can use with mild steel wire and shield gas for welding carbon steel. The
shielding gas should be either pure (100%) CO2 or a 75% argon-25% CO2mixture.
Make sure you use proper welding polarity: as diagram 3-2A., grounding cable connect “-”
terminal, another cable (welding torch cable) connect “+” terminal. The diameter of the wire you
select should correspond to the thickness of the work piece. Make sure that the contact tip you are
using is the same size as the wire diameter.
Step1: Use ground clamp to connect the grounding cable and work piece or connect the metal
carriages (as work table) make sure the clamp has been contacted fully with work piece and clear
the rust and paint.
Step2: Select the welding current, adjust the position of “MIN/MAX” and “1/2” switch, use higher
welding current for thicker material.
Step3: Check the position of power switch, position must be on “OFF”, then insert the inlet wire to
the socket ( rated current of socket ≥20A).
Step4: Discharge the nozzle cover and contact tip at the head of welding torch, pull the soft pipe.
Step5: The welding tongs that clamp the rod can’t be contacted with any grounding objects then
turn the "ON/OFF “switch to “ON” position, the power lamp (green) will light.
Step 6: Press (and hold) the torch button until distance between wire and welding torch is 30mm
loosen torch button.
Step7: Close the power; fix the contact tip and nozzle cover onto the welding torch. (Wire must
through the contact tip and nozzle cover)

15
Cautions
Chapter3 Operation
Step8: Open the gas valve of the regulator and set a flow of 5-7 L/Min, depending on the welding
position chosen.
Step9: Open the power, press the switch spasmodically, adjust the speed by turning the adjusting
wire feed speed knob, in relation to the position of the welding current selector.
Step10: Orient yourself on the area to be welded, and then place the Face Shield over your eyes.
Step11: Press (and hold) the torch button and stroke the area to be welded with the electrode wire
to ignite the arc.
Step12: Once the arc is ignited, tilt the electrode wire forward at an angle of approximately 35o.
(as diagram 3-3)
Step13: When the weld is complete, lift the electrode wire clearly away form any grounded object,
set the Face Shield down and turn the Power Switch to the “OFF” position.
Step14: Unplug the Power Cord from the electrical outlet.
Step15: Close the gas cylinder valve.
Step16: Depress torch trigger to release gas in regulator, the gas pressure indicator will return to
0.
If welding with large current for a long time and exceed the duty cycle, the overload
lamp will light (yellow), the machine will stop working until looking to the stated
temperature. When the overload lamp lights you must stop welding and wait about 15
minutes, you can continue.

16
Cautions
Chapter4 Maintenance
4.1 Summarize
If the equipment can’t work normally, you should stop working at once and
check trouble reason. You must use career man to maintenance, forbid
somebody that without training to check clear or repair equipment, when
repairing, you’d better to use commendatory spare parts.。
Before any maintenance, make sure the main switch has been cut or
remove the fuse.
4.2 Cleanness
Take the shell and sideboard trimly, and use cleanly and dry low-pressure air to blow dust
and dirt on air alleyway and inner parts. Clear the dirt, dregs and begrime on the head of welding
tongs trimly. Make sure the clean frequency according to the circumstance.
In order to enough circulating and supply proper cooling, it’s necessary to keep the alleyway
cleanness.
After cleaning by low-pressure, check any hardware has flexible, if flexible, you must firm
them, include all electric connector. Check if insulation of cable has been frayed, if the cable has
been frayed, you must replace it.
If you replace the cable improperly, the bare cable may contact the
grounding objects, the arc can hurt your eyes or bring bad fire. If body contact
the have cable linker or lead; you may be burned or dead.
4.3 Check and maintenance
Keep the power dry, remove grease and make sure the power can’t be damaged by flaming
metal and spark.
4.3.1 Fan
Make sure without dust and velveteen on blower fan.
4.3.2Transformer
Transformer needn’t any maintenance except clear the dust and dirt trimly. Use low-pressure
air to let it clean and dry.
4.3.3 Replacing the wire reel
When the wire on the feed reel is used up, you will need to replace it as the Chapter 2.3.4.
4.3.4 Cable
Placed cable at a clean and dry place.
Warning
Warning

17
Chapter5 Fault diagnosis
5.1 Summarize
Before repairing, you must cut the main switch or breaker.。
If the machine can’t work normally, use following information, you can find the reason.
Check trouble and collate symptom, as table 5-1.If the problem can’t be found at once, you
should open the power to see ass parts and wire.
Electric repairing must be made by career man.
Table5-1 Diagnose and remove
TROUBLE REASON SHOOTING
Welder dose
not function
when
switched on
1. No power at receptacle
2. Broken or damaged power
cable
3. Tripped thermal protection
device
1. Check circuit fuse or circuit breaker
2. Power cable requires service
3. After cooling then try to continue
Wire does not
feed properly
1. Insufficient wire feed
pressure
2. Wing nut is too loose
1. Increase wire feed pressure properly
2. Tighten wing nut
Welding arc
not stable
1. Heavy loads making power
line voltage low
2. Work piece not properly
grounded
3. Incorrect wire feed speed
1. Run welder on rated line voltage
2. Verify proper grounding. (No paint,
varnish or corrosion)Replace by career.
3. Adjust wire feed speed to achieve a more
stable arc
The weld is
like sponge
1. Empty gas cylinder.
2. Regulator or cylinder valve
closed.
3. Nozzle plugged.
4. Gas line blocked.
1. Check gas cylinder
2. Make sure both valves are adjusted
properly
3. Clean nozzle, if damaged, replace.
4. Check external hose, and hose within
Torch cable.
When
Pressing
switch the
machine can
not working
1. Control wire broke off
2. Circuit board damaged.
1. Check by career
2. Have a qualified technician check or
replace
Warning
Warning

18
Packing list
No. Name Specification Qty Remark
1 Welding power MIG151 1
2 Operating manual 1
3 Weld wire Φ0.8 （0.9Kg）1
4 Gallus 2
5 Face shield 1
6 Screening glass 1 With face shield
7 Hammer/Brush 1
8 Handle socket 2
9 Kickstand 1
10 Wheel 5″2
11 Axle socket 2
12 Axle Φ10mm 1
13 Straight handle 1
14 Brace 1
15 Contact tip Φ0.8 1
16 Spanner 1
17 Bolt GB845 ST4.2×13 2
18 Bolt GB845 ST4.2×20 4
19 Rings GB896 8 2